spring+hibernate的事务在service层配置

<!-- DataSource,SessionFactory start-->
<bean id="dataSource"class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.sybase.jdbc3.jdbc.SybDriver"> </property>
<property name="url" value="jdbc:sybase:Tds:ip:port/dbname"> </property>
<property name="username" value="sa" />
<property name="password" value="" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingResources">
<list>
<value>t1/Tuser.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.SybaseDialect
hibernate.show_sql=true
</value>
</property>
</bean>
<!-- DataSource,SessionFactory end -->
<!-- Transaction config start -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<bean abstract="true" id="transactionProxy"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager" ref="transactionManager"></property>
<property name="transactionAttributes">
<props>
<prop key="add*">PROPAGATION_REQUIRED</prop>
<prop key="del*">PROPAGATION_REQUIRED</prop>
<prop key="mod*">PROPAGATION_REQUIRED</prop>
<prop key="*">PROPAGATION_SUPPORTS, readOnly</prop>
</props>
</property>
</bean>
<!-- Transaction config end -->
<!-- Authorization Management (AOP) -->
<!-- Service Proxy Start -->
<bean id="userService" parent="transactionProxy">
<property name="target" ref="userServiceImpl"></property>
</bean>
<!-- Service Proxy End -->
<!-- Service Impl Target Beans Start -->
<bean id="userServiceImpl"class="t1.UserService">
<property name="tuserDAO" ref="tuserDAO" />
</bean>
<!-- Service Impl Target Beans End -->
<!-- Dao Beans Start -->
<bean id="tuserDAO"class="t1.TuserDAO">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!-- Dao IMpl Target Beans End -->